Cisco Systems 5.4.x DMS-CD Concepts

19-4

UserGuide for Cisco Digital Media Manager5.4.x

OL-15762-05

Chapter19 Content Distribution and Delivery

Concepts

DMS-CD Concepts

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DMS-CD Overview, page19-4

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Retry Timeout, page 19-4

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Concurrent Deployments, page 19-4

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DMS-CD Performance Factors, page 19-5

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Understand Shared Scheduling Features for Deployments, page 19-6

Activation Anyone who has purchased a valid license to use this release of Cisco Digital Signs also has a perpetu al license to

use its built-in implementation of DMS-CD. No additional software is required and there is no recurring cost.

Cisco DMS Content Distribution (DMS-CD) is a file delivery and management mechanism. It conserves

network bandwidth and optimizes playback performance by provisioning creative assets directly to your

DMPs. You can use FTP or SFTP to transfer multiple playlists and presentations to DMP local storage.

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Store assets locally on the flash memory card that is preinstalled inside a DMP.

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Store assets locally on an external USB hard drive or flash drive that you attach to a DMP.

Tip DMPs cannot use the loopback IP address (127.0.0.1) or the loopback hostname (localhost) to find or load assets

stored locally. Instead, the path to local assets must always begin with file://tmp/ftproot/ before it specifies one local volume,

any subdirectories, and the relevant filename.

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The factory default Retry Count value is 5.

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The factory default Retry Timeout duration is 300 seconds.

Given these values, you can expect that DMS-CD—when it uses defau lt values—takes as long as

1,500 seconds (25 minutes) to detect assets or determine that a DMP is unreac hable and give up. In cases

when this duration is too long, you might try changing the Retry Timeout value from 300 to 30.

Most DMS-CD deployment preference settings that you define take effect during the next scheduled

DMS-CD deployment. However, any time that you change the “Number of concurrent deployments”

value, you must restart your DMM appliance and run a scheduled DMS-CD deployment befor e the

changed setting takes effect on your DMPs.